Finding the Fourth Proportional to 16,301.88, 22,489.76 and 10,987.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,301.88 : 22,489.76 = 10,987.48 : x
2. Step 2: Convert to fraction form
   16,301.88/22,489.76 = 10,987.48/x
3. Step 3: Cross multiply
   16,301.88x = 22,489.76 × 10,987.48
4. Step 4: Simplify right side
   16,301.88x = 247,105,788.20
5. Step 5: Solve for x
   x = 247,105,788.20/16,301.88
6. Step 6: Final answer
   x = 15,158.12